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How to Downgrade macOS 10.13 High Sierra to 10.12 Sierra

Note: To all respected NoteBurner users who have updated their macOS to the latest 10.13 High Sierra, because of the incomplete compatibility between NoteBurner M4V Converter Plus and macOS 10.13 High Sierra, you probably can not use the program under this specific program properly. But NoteBurner development team is focusing on this incompatibility issue to find the solution soon. We will post the further notice on our official sites and Facebook channel after we resolve it successfully.

If you have Windows PC at hand, we suggest you try our Windows version. You can contact our support team via support [at] noteburner.com (replace [at] as @ before sending message) and let our customer service expert change your license code to Windows version for free.

If you still want to make NoteBuner M4V Converter Plus work on Mac before the last settlement out, downgrade the macOS High Sierra to macOS Sierra is the feasible way at present. Therefore, we write this post to show how to easily downgrade macOS 10.13 High Sierra to 10.12 Sierra in a safe way.

Tips: In order to prevent the data lost after downgrading, please make sure that all important data will be back-up, so that all backup can be restored after downgrading. Just go to Apple Menu → System Preferences and use Time Machine or via iCloud and other cloud services to backup your files. Now, let's go on the tutorial on downgrading macOS High Sierra to Sierra.

Tutorial on Downgrading macOS 10.13 High Sierra to 10.12 Sierra

Part 1: Download Bootable Drive of macOS Sierra

Before removing macOS High Sierra from Mac machine, it is necessary to download drive for macOS Sierra from App Store. You just need to search for it if you have purchased before.

Part 2: Remove macOS High Sierra from Mac

Step 1: Click on Apple icon at the top-left corner of your Mac main interface and select Restart. Just hold down Command+R when Mac restarts.